Knowledge base for software setup, errors, and daily tool work.

Fix Nginx 502 Bad Gateway Behind Cloudflare

If you're seeing a 502 Bad Gateway error on a site that uses both Nginx and Clou...

Fix OneDrive Permission Denied When Syncing Files

You see a 'permission denied' error while syncing files in OneDrive. This usually happens when On...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Fix Windows Defender Service Not Starting After Update

After a Windows update, you might find that Windows Defender won't start, leaving your system wit...

Fix Outlook 404 Not Found Error in Microsoft 365

You open Outlook in Microsoft 365 and see a '404 Not Found' page. This usually means Outlook can'...

Fix Command Prompt Blank White Screen with No Text

You open Command Prompt, but instead of the usual black window with a blinking cursor and text, y...